[GitHub] [incubator-nuttx] pkarashchenko commented on a diff in pull request #7025: Add check in roundx() functions for infinite or NaN cases

[GitBox]

pkarashchenko commented on code in PR #7025:
URL: https://github.com/apache/incubator-nuttx/pull/7025#discussion_r964462138


##########
libs/libc/math/lib_round.c:
##########
@@ -34,6 +34,11 @@
 #ifdef CONFIG_HAVE_DOUBLE
 double round(double x)
 {
+  if (isinf(x) || isnan(x))
+    {
+      return (x);

Review Comment:
   ```suggestion
         return x;
   ```



##########
libs/libc/math/lib_roundl.c:
##########
@@ -34,6 +34,11 @@
 #ifdef CONFIG_HAVE_LONG_DOUBLE
 long double roundl(long double x)
 {
+  if (isinf_l(x) || isnan(x))
+    {
+      return (x);
+    }
+
   long double f = modfl(x, &x);

Review Comment:
   ditto



##########
libs/libc/math/lib_round.c:
##########
@@ -34,6 +34,11 @@
 #ifdef CONFIG_HAVE_DOUBLE
 double round(double x)
 {
+  if (isinf(x) || isnan(x))
+    {
+      return (x);
+    }
+
   double f = modf(x, &x);

Review Comment:
   Please separate this. Move `double f;` before `if (isinf(x) || isnan(x))` 
abd change here to `f = modf(x, &x);`



##########
libs/libc/math/lib_roundl.c:
##########
@@ -34,6 +34,11 @@
 #ifdef CONFIG_HAVE_LONG_DOUBLE
 long double roundl(long double x)
 {
+  if (isinf_l(x) || isnan(x))
+    {
+      return (x);

Review Comment:
   ```suggestion
         return x;
   ```



##########
libs/libc/math/lib_roundf.c:
##########
@@ -33,6 +33,11 @@
 
 float roundf(float x)
 {
+  if (isinf_f(x) || isnan(x))
+    {
+      return (x);
+    }
+
   float f = modff(x, &x);

Review Comment:
   ditto



##########
libs/libc/math/lib_roundf.c:
##########
@@ -33,6 +33,11 @@
 
 float roundf(float x)
 {
+  if (isinf_f(x) || isnan(x))
+    {
+      return (x);

Review Comment:
   ```suggestion
         return x;
   ```



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